1. Cigna to buy Express Scripts for $67B: 5 things to know Full story

2. Tenet eliminates poison pill, adopts governance changes Full story

3. Apple's next big move may be high-end headphones Full story

4. Gary Cohn resignation shakes stock market Full story

5. Interested in diving deeper into business news? Register to join Scott Becker, business insiders and Becker's editorial team for a webinar recap of top current stories. Learn more

6. Amazon to slash Prime membership by 54% for Medicaid recipients: 4 things to know Full story

7. Trump prepares to formally announce new steel and aluminum tariffs Full story

8. GE to launch giant new battery platform: 3 things to know Full story

9. International Women's Day spotlight: 8 thoughts on leadership from women in the healthcare industry  Full story